stri_split_charclass: Split a String by a Character Class
Description
Splits each element of str into substrings.
pattern indicates delimiters that separate
the input into fields. The input data between the matches become
the fields themselves.
stri_split_charclass("Lorem ipsum dolor sit amet", "\\p{WHITE_SPACE}")
stri_split_charclass("Lorem ipsum dolor", "\\p{WHITE_SPACE}", n=3,
omit_empty=c(FALSE, TRUE))